Update common-definitions hash (#2)

* Update common-definitions hash

* Bump nomenclature requirement version

* Bump Python version for validation

* Switch from black to Ruff

* Add Ruff badge

.github/workflows/ruff.yml

@@ -0,0 +1,8 @@
+name: Ruff
+on: [ push, pull_request ]
+jobs:
+  ruff:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: chartboost/ruff-action@v1

.github/workflows/validation.yml

@@ -17,10 +17,10 @@ jobs:
     steps:
     - uses: actions/checkout@v3
 
-    - name: Set up Python 3.9
+    - name: Set up Python 3.11
       uses: actions/setup-python@v4
       with:
-        python-version: 3.9
+        python-version: 3.11
 
     - name: Install requirements
       run: pip install -r requirements.txt

README.md

@@ -2,7 +2,7 @@
 
 Copyright 2022-2024 IIASA
 
-[![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
+[![Ruff](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/astral-sh/ruff/main/assets/badge/v2.json)](https://github.com/astral-sh/ruff)
 
 ## Overview
 

nomenclature.yaml

@@ -1,7 +1,7 @@
 repositories:
   common-definitions:
     url: https://github.com/IAMconsortium/common-definitions.git/
-    hash: 013295a
+    hash: 23b2833
 definitions:
   region:
     repository: common-definitions

requirements.txt

@@ -1,2 +1 @@
-pyam-iamc >= 1.0  # the `pyam` package is released on pypi under this name
-nomenclature-iamc >= 0.11
+nomenclature-iamc >= 0.19.0  # use the latest release on PyPI